<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">注销</el-button>
    </el-header>
    <!-- 页面主题区域 -->
    <el-container>
      <!-- 侧边栏区域 -->
      <el-aside :width="isCollapse ? '64px' : '200px'" >
        <!-- 菜单栏按钮 -->
        <div class="toggle-button" @click="togglecollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu background-color="#333744" text-color="#fff"  active-text-color="#409FFF" :unique-opened="true"
        :collapse='isCollapse' :collapse-transition='false' router :default-active="activePath">
          <!-- 一级菜单区域 -->
          <el-submenu :index="item.id +''" v-for="item in menulist" :key="item.id">
            <!-- 一级菜单的模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>
          <!-- 二级菜单 -->
              <el-menu-item :index="'/'+ subItem.path" v-for="subItem in item.children" :key="subItem.id"
              @click=" saveNavState('/'+ subItem.path)">
                <!-- 二级菜单模板区域 -->
                <template slot="title">
                  <!-- 图标 -->
              <i class="el-icon-menu"></i>
              <!-- 文本 -->
              <span>{{subItem.authName}}</span>
            </template>
              </el-menu-item>

          </el-submenu>
        </el-menu></el-aside
      >
      <!-- 页面右边主体区域 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data() {
    return {
      menulist: [],
      iconsObj: {
        '125': 'iconfont icon-users',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      },
      isCollapse: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
   created() {
  this.getMenuList()
  this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    // 退出功能
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
      console.log(res)
    },
    // 是否折叠左侧菜单栏
    togglecollapse() {
      this.isCollapse = !this.isCollapse
    },
    // 保存链接的激活状态
    saveNavState(activePath) {
     window.sessionStorage.setItem('activePath', 'activePath')
     this.activePath = activePath
    }
  }

}
</script>
<style lang="less" scoped>
.home-container {
  height: 100%;
 
}

.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;

  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
}
.el-main {
  background-color: #eaedfa;
}
.iconfont {
  margin-right: 10px;
}
.toggle-button {
  background-color: #4A5064;
  font-size: 10px;
  color: #fff;
  letter-spacing: 0.3em;
  text-align: center;
  line-height: 24px;
  cursor: pointer;

}
</style>
